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Size Matters

Size Matters

You play as a scientist who is shrinking every second in a race against time! Find all the ingredients and formulas scattered around the laboratory, which are necessary for producing the life-saving antidote. But beware, your time is very precious.

Released Mar 12, 2021 Developer Mazen Games Publisher GrabTheGames Platforms Windows SimulationCasualScienceIndieEducation
View on Steam ↗ $9.99 (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.

87.1%positive511 reviews
Recommended · 0 found this helpful

“A really cute physics puzzle game with lots of settings to go nuts with. I recommend it for a quick fix.”

— a player, Steam review · 3 hrs played
Recommended · 0 found this helpful

“This game honestly surprised me. The idea sounds simple at first, but it gets chaotic really fast in a fun way. You're constantly under pressure while your size keeps changing, which makes even small tasks feel stressful (in a good way). It’s one of those games where you keep…”

— a player, Steam review · 13 hrs played
Recommended · 0 found this helpful

“An average escape room styled game. Search the room for the answers while mixing the right flasks for the antidote. Not bad for a casual muck around but nothing special here to boast about. Personal Rating: 3/5 Stars (Average).”

— a player, Steam review · 5 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2023-11 via SteamCharts.

229all-time peak
0 10 20 2021 2022 2023 No data collected for this period No data collected for this period No data collected for this period No data collected for this period No data collected for this period 13 avg · Jan 2022

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-19.

57achievements
8.1%median completion
4.4%rarest: Chemical Reverter Expert!
62.5% of players 51.1% of players 47.8% of players 42.6% of players 38.8% of players 37.1% of players 35.0% of players 28.2% of players 24.2% of players 23.7% of players 21.1% of players 19.6% of players 19.5% of players 19.3% of players 17.3% of players 17.2% of players 15.5% of players 15.0% of players 14.4% of players 13.1% of players 12.2% of players 12.0% of players 11.2% of players 10.3% of players 10.0% of players 9.5% of players 8.3% of players 8.1% of players 8.1% of players 7.5% of players 7.3% of players 7.3% of players 7.2% of players 6.4% of players 6.3% of players 6.3% of players 5.9% of players 5.6% of players 5.5% of players 5.4% of players 5.4% of players 5.3% of players 5.1% of players 5.0% of players 5.0% of players 4.9% of players 4.9% of players 4.9% of players 4.8% of players 4.8% of players 4.8% of players 4.8% of players 4.7% of players 4.6% of players 4.6% of players 4.5% of players 4.4% of players 62.5% 0% most earned rarest
Almost everyone has
62.5%Thank you! <3 — A thanks from developer for playing Size Matters!
51.1%Aspiring Chemist! — Use Chemical Processor successfully for the first time ever!
47.8%**** — Enter a correct code into the Code Combiner!
Rarest badges of honor
4.4%Chemical Reverter Expert! — Use Chemical Reverter for more than 10 minutes!
4.5%Pickups Pro! — Find ALL pickups in ALL laboratories!
4.6%Pickups Laboratory 3! — Find all pickups in Laboratory 3!

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-08-12. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-09-25 21:36 UTC
$2.79lowest since tracking began2026-09-03
US9.99 USD
EU9.75 EUR
UK8.50 GBP
Australia14.50 AUD
Canada12.99 CAD
Japan1,200 JPY
Brazil32.99 BRL
China42.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$6.3 Brazil Japan Canada US Australia EU UK≈$11

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

$0 $10 $20 08-12 08-21 08-30 09-08 09-16 09-25

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Sep 21, 2023
AtmaSphere 2

Hey everyone! Hope you are doing well! I am happy to let you know that I'm working on a sequel to Atmasphere! Find it here on Steam: https://store.steampowered.com/app/2509120/AtmaSphere_2/ You can al

Dec 14, 2021
Deep Discount 66% Off For A Limited Time! Consoles Release on The Horizon.

You play as a scientist who is shrinking every second in a race against time! Find all the ingredients and formulas scattered around the laboratory, which are necessary for producing the life-saving a

Jul 23, 2021
Size Matters 50% off for a limited time

Grab Size Matters at 50% off for a limited time.

Apr 01, 2021
Update 1.1.3

Patch notes for Update 1.1.3 You can now mark formulas visually. You need to pick them up to be able to mark them. You can also mark the ones on the board while you having your cursor on them. (defaul

Mar 13, 2021
Update 1.1.2

Patch notes for Update 1.1.2 - WORKING ON FIXING SOME TRANSLATION ERRORS - Small UI translation fixes Translated some texts that happened not to be translated properly End screen is now properly blure

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-13.

GenresAction, Adventure, Casual, Indie, Racing, Simulation
Player tagsSimulation · Casual · Science · Indie · Education · Sandbox · Funny · Management · Puzzle · First-Person · Action · Singleplayer (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Cloud · Family Sharing
LanguagesEnglish * , German * , Spanish - Spain * , Czech * , Polish * , Portuguese - Portugal * , Russian * , Simplified Chinese * , Italian * , Portuguese - Brazil * , Spanish - Latin America * , Turkish * , Greek * , Japanese …
Achievements57
Minimum system requirements (PC)

Minimum: OS *: Windows 7/8.1/10 32-bit or 64-bit Processor: Quad Core 2.6 GHz Memory: 4 GB RAM Graphics: Nvidia GTX 650 Ti 2GB or AMD Radeon HD 7970 3GB DirectX: Version 11 Storage: 4 GB available space